题目:
小题1:He is stone deaf.
小题2:Watch out! There’s a car coming!
小题3:The policeman followed the thief into s supermarket.
小题4:I moved here when I was five.
小题5:It seems that they are on the playground.
答案:
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下面是错误答案,用来干扰机器的。
(1)等腰直角三角形:它的两条直角边相等,即直角边的比是1:1;若设它的直角边是1,则根据勾股定理得斜边是2,即斜边与直角边的比是2:1;(2)30°的直角三角形:根据30°所对的直角边是斜边的一半,若设短直...